Introduce VLANClientState::cleanup() (Mark McLoughlin)

We're currently leaking memory and file descriptors on device
hot-unplug.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7150 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 14 insertions, 5 deletions

diff --git a/hw/smc91c111.c b/hw/smc91c111.c
index f5b29a7..9f567ab 100644
--- a/hw/smc91c111.c
+++ b/hw/smc91c111.c
@@ -42,6 +42,7 @@ typedef struct {
     uint8_t int_level;
     uint8_t int_mask;
     uint8_t macaddr[6];
+    int mmio_index;
 } smc91c111_state;
 
 #define RCR_SOFT_RST  0x8000
@@ -690,24 +691,32 @@ static CPUWriteMemoryFunc *smc91c111_writefn[] = {
     smc91c111_writel
 };
 
+static void smc91c111_cleanup(VLANClientState *vc)
+{
+    smc91c111_state *s = vc->opaque;
+
+    cpu_unregister_io_memory(s->mmio_index);
+    qemu_free(s);
+}
+
 void smc91c111_init(NICInfo *nd, uint32_t base, qemu_irq irq)
 {
     smc91c111_state *s;
-    int iomemtype;
 
     qemu_check_nic_model(nd, "smc91c111");
 
     s = (smc91c111_state *)qemu_mallocz(sizeof(smc91c111_state));
-    iomemtype = cpu_register_io_memory(0, smc91c111_readfn,
-                                       smc91c111_writefn, s);
-    cpu_register_physical_memory(base, 16, iomemtype);
+    s->mmio_index = cpu_register_io_memory(0, smc91c111_readfn,
+                                           smc91c111_writefn, s);
+    cpu_register_physical_memory(base, 16, s->mmio_index);
     s->irq = irq;
     memcpy(s->macaddr, nd->macaddr, 6);
 
     smc91c111_reset(s);
 
     s->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name,
-                                 smc91c111_receive, smc91c111_can_receive, s);
+                                 smc91c111_receive, smc91c111_can_receive,
+                                 smc91c111_cleanup, s);
     qemu_format_nic_info_str(s->vc, s->macaddr);
     /* ??? Save/restore.  */
 }